ZN39-40.5C series indoor high-voltage vacuum circuit breakerDetailed product description：

1. Overview
ZN39-40.5C series vacuum circuit breaker is a three-phase AC 50Hz, rated voltage 40.5kV indoor high-voltage distribution device. Can be matched with JYN1-35/GBC-35 switchgear. Suitable for control and protection of transmission and distribution systems such as power plants and substations, especially in places with frequent operations.
The vacuum circuit breaker is a handcart type, with a reasonable structure, easy maintenance, and safe and reliable use. Equipped with CD10-II electromagnetic actuator or CT19-II spring actuator.
2. Normal usage conditions
a) Altitude: not exceeding 1000m;
b) Surrounding air temperature: maximum+40 ℃, minimum -10 ℃;
c) Relative humidity: daily average not exceeding 95%, monthly average not exceeding 90%;
d) Water vapor pressure: daily average not exceeding 2.2kPa; The monthly average value is not greater than 1.8kPa;
e) A place without fire, explosion hazard, serious pollution, chemical corrosion, and severe vibration.

3. Main technical parameters of ZN39-40.5C series indoor high-voltage vacuum circuit breaker:

serial number	name	unit	data
one	rated voltage	kV	forty point five
two	rated frequency	Hz	fifty
three	Rated power frequency withstand voltage (1min)	kV	ninety-five
four	Rated lightning impulse withstand voltage (peak)		one hundred and eighty-five
five	rated current	A	1250/1600
six	Rated short-circuit breaking current	kA	twenty	twenty-five
seven	Rated short-circuit closing current (peak)		fifty	sixty-three
eight	Rated short-time withstand current		twenty	twenty-five
nine	Rated peak withstand current		fifty	sixty-three
ten	Rated short-circuit duration	A	four
eleven	Rated short-circuit breaking current breaking times	time	eight
twelve	mechanical life		ten thousand
thirteen	closing time	ms	≤100
fourteen	Opening time		≤60
fifteen	Dimensions (width x depth x height)	mm	1180×1414×1728
sixteen	quality	kg	five hundred

ZN39-40.5C series indoor high-voltage vacuum circuit breaker